What is the definition of Substance Use Disorder as per the DSM-IV?

The definition of Substance Use Disorder according to the DSM-IV is centered around the concept of a maladaptive pattern of substance use that leads to significant impairment or distress. This understanding highlights the importance of recognizing the impact of substance use on an individual's daily functioning, relationships, and overall well-being. When substance use becomes maladaptive, it typically results in negative consequences such as job loss, legal issues, or failing to fulfill obligations, which can be characterized by the recurrent use of substances despite these adverse outcomes.

In contrast, other choices describe behaviors that do not meet the criteria for Substance Use Disorder. For example, a consistent pattern of social drinking does not inherently imply that one is experiencing impairment or distress. Similarly, occasional use of recreational drugs may not be problematic for everyone and could fall within the range of normal behaviors that do not affect a person's functional abilities. Lastly, a brief period of substance abuse without repercussions suggests that the individual is not facing significant issues as a result of their substance use, which also does not align with the defining characteristics of a disorder. Overall, option B captures the essence of Substance Use Disorder by focusing on the negative consequences and the maladaptive nature of substance use.